You kind of can't add event handlers to a class. The compiler uses a
special mechanism to pass them to the runtime. For future reference, you
can obtain a reference to your instance's prototype thisayway:
this.constructor.prototype
but it sounds like what you really want is to make a new class at
runtime. This is possible in our current implementation, but not
documented or encouraged. Tucker, we should consider this a feature
request to make the new class system (in Legals) public.
A
On Jun 12, Matthew Cloy wrote:
> Hi,
>
> I want to inject event handlers into a class prototype (not instance) at
> runtime. (specifically into the prototype of view, but would be useful
> to do
> in other circumstances too, and would be useful to also be able to
> inject functions and attributes!!!)
>
> Why?
>
> Our application is SOLO, but entirely dynamically built.
>
> I've modified LzView to request child nodes from the server under
> certain circumstances.
>
> (I.E, views (and actually datasets too) can be sent in XML from our
> server to a dataset in the app, and the UI is dynamically generated in a
> SOLO application from this. A little like a limited proxied mode without
> the servlet)
> This xml very closely matches the xml one would use to define a .lzx
> file, but without any JS, methods or constraints (For obvious reasons),
> but there are other constructs in our code base that accomodate layouts
> and "actions".
>
> This all works lovely now.
>
> BUT, I don't want to have to modify the core laszlo code or components.
>
> I figure I just need to inject a default oninit event handler to the
> prototype of <view> at startup, but how?
>
> I had a poke around at the prototype of the view class in the debugger
> (LzView.prototype), and tried changing a few things
> (like the default x coordinate for a view, and the default bgcolor) but
> newly created views didn't inherit my change, so I just gave up
> and modified the source.
>
> Any help appreciated.
> Thanks
> Matt
>
>
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>
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